1)2x² + 24xy +72y² = 2 ·(х²+12ху+36у²) = 2·(х+6у)² = 2·(х+6у)(х+6у)
2)10ab-5b² -6a+3b=5b(2a-b)-3(2a-b)=(2a-b)(5b-3)
1)2x² + 24xy +72y² = 2 ·(х²+12ху+36у²) = 2·(х+6у)² = 2·(х+6у)(х+6у)
2)10ab-5b² -6a+3b=5b(2a-b)-3(2a-b)=(2a-b)(5b-3)